Finding the Fourth Proportional to 105,410.56, 145,468.72 and 57,667.04

Step by Step Solution

1. Step 1: Write the proportion equation
   105,410.56 : 145,468.72 = 57,667.04 : x
2. Step 2: Convert to fraction form
   105,410.56/145,468.72 = 57,667.04/x
3. Step 3: Cross multiply
   105,410.56x = 145,468.72 × 57,667.04
4. Step 4: Simplify right side
   105,410.56x = 8,388,750,494.99
5. Step 5: Solve for x
   x = 8,388,750,494.99/105,410.56
6. Step 6: Final answer
   x = 79,581.69